Section insulator



sep. 25,1923'. l y 1,469,078

K. FRl'rscH sEcTIoN wsuLAToR vFiled Feb. zo. 1 925 'gb-sl lk@ Inventor:

Karl Frits c h.'

Patented Sept. 25, i923 siren stares ar.

KARL FRITSCH, OF MURNAU, GERMANY, A.'`LSS]I(`%N()R TO GENERAL ELECTRIC COBE- PANY, A CORPORATONuOF NEW YORK.

SECTION INSULATOR.

application fue@ February zo, 1923. serial No. esa-0,275.

To @ZZ @c1/tom it may concern.' f

Be it known that l, KannFnrrscr-r, a citizen oi the German Republic, residing at. Murnau. Oberbayern, Germany, have in- 5 vented certain new and useful improvements in Section Insulators, of which the following is a specification.

The present inventionrelates to electric railways and more especially to the oven 10 head trolley wire construction thereof.

ln order to provide for sectionaliaing a.V

trolley system s that workmen may make repairs in safety on any one section while the rest ot the system remains electrically charged and in operative condition, it is customary to provide section insulators at desired pointsV in the trolley wire and indepcndenthr connect the section 0f wire beween any two insulators to a feeder cable so that when it becomes necessary to render a particular section dead, it is necessary only to open its connection to the feeder cable. 'a

The object ot my invention is to provide 25 an improved section insulator which shall he light and neat in appearance, strong and highly insulative and which will enable the current collector to pass freely and smoothly therebeneath.

@ne embodiment of the invention is illustrated in the accompanying drawing, in which:

Fig. 1 is aside elevation, and Fig. 2 is av plan of a section insulator for use on systems employing bow trolleys.

The trolley wires 1 and 2 are looped about arcuate stirrups 3 and 4f supported by spool insulators 5 and G. These insulators are mounted on horizontal bars 7 and 8 carried by brackets 9 and 10 having their upper ends sleeved and riveted upon longitudinal beams 11 and 12 in the form otsteel pipes. The lower ends ot the brackets 9 and are attached 'to runner tracks 13 and 14 which are made rocker-shaped by extending their ends a considerable distance beyond the brackets and bowing them upwardly to connect with extended ends of the beams 11 and `12 by means of cast terminals 15 and 16. The brackets 9 and 10 have lugs 17 and 18 at their upper ends for attachment of the suspension wires.

Then a bow trolley approaches the section insulator, it will remain in conductive relation to the trolley wire 1 or 2 arrives at a point nearly beneath the first ot the brackets 9 or 10 where it passes without uate stirrup.

oli therefrom upon thev opposite trolley wire and receives current 'from the latter section.

lVhile l have shown and described the best form of the invention known to me, l do lnot desire to be restricted thereto.

lVhat v claim as new and desire to secure by Letters Patent of the United States, is

1. A. section insulator comprising two slee beams, runner tracks supported beneath said beams, and two insulators held in spaced relation between said beams and adapted to receive about them the respective ends of the trolley wire, Y

2. A. section insulator comprising two side beams, bowed ruimer tracks supported beneath said beams, crossbars connecting said beams, and insulators mounted onu said crossbars and adapted to receive vthe respective ends of the trolley wire.

A section insulator comprising two side beams, bowed runner tracks connected their ends to the ends of said beams, brackets connecting said tracks with said beams at points intermediate their ends, crossbars connecting opposite brackets.. and insulators mounted on said crossbars and adapted the respective ends ot the trolley to receive wire.

ends or" the trolley wire.y

ln witness whereof. l have hereunto set my hand this eleventh day oi January KARL FRITS-Cll. 

